Elevator.



No. 809,117. PATENTED JAN. 2, 1906. G. R. LAYMAN.

BLEVTOR. APPLICATION FILED JULY 8, 190s 2 SHEETS-SHEET 1.

n j l e f e T. o@ L @a PATENTED JAN. 2, 1906.

Noy 809,117.

G. R. LAYMAN.

. ELEVATOR.

APPLICATION FILED JULY s. 1905.

2 SHEETS-SHEET 2.

wit/www0 UNITED STATES PATENT OFFIOE.

ELEVATOR.

Specification of Letters Patent.

Patented J' an. 2, 1906.

Application lefl July 8, 1905. Serial No. 268,792.

T0 00M whom it neet-l concern..-

Be it known that I, GEORGE R. LAYMAN, a

.citizen of the United States, residing at Lin- .to provide a mineelevator or cage which shall be simple in construction, strong anddurable, will greatly facilitate the operation of" loading the carsthereon and unloading them therefrom, and will provide against seriousaccident in case the hoisting and lowering cable should break.

Other objects and advantages of the invention will hereinafter appearand the novel features of construction specifically pointed out in theclaims. Y

In the accompanying drawings, which form a part of this specification,Figure 1 isla front elevation of an elevator or mine-cage constructed inaccordance with my invention. Fig. 2 is a side elevation, the nearshaft-beam and one of the side pieces of the cage being broken away toshow the construction of the pivoted platform and parts carried thereby.Fig. 3 is a sectional view through the upper corner of the cage on theline 3 3 of Fig. l. Fig. i is a transverse sectional view through theupper part of the cage on the line 4- 4 of Fig. l. Fig. 5 is a detailview of one of the safety-catches. Fig. 6 is a detail view' of thelocking-dogs for holding the car upon the pivoted platform. Fig. 7 is adetail view of one of the trip-levers for operating the locking-dogs.

Like letters of reference indicate like parts in all the views of thedrawings.

My improved mine-cage is adapted to operate in a shaft provided with theusual vertical beams or uprights A A, suitably supported at oppositesides of the shaft, and which beams or uprights form the tracks orguides on which the elevator runs.

In constructing the cage in accordance with my invention I provide anupper pair of horizontal beams B B, forming the top of the cage, and asimilar pair of beams B B', forming the bottom of said cage, and connectsaid upper and lower beams together by straight metal plates or flatbars U. The upper beams, as well as the lower, are spaced apart and aresecurely held in their relative positions by means of rectangularcastings c, interposed between said beams near the opposite ends thereofand bolted. thereto, as shown in Fig. 3. The beams are spaced apart toreceive the uprights A of vthe shaft between the ends thereof, and asthe connectingplates or flat bars O, which form the sides of the cage,are attached to the ends of said beams they are disposed at the oppositesides of the uprights. Wear-plates c in the form of angle-plates arebolted in .place between the ends of the beams B B and B B', asindicated in Fig. 8, and embrace the shaft-beams orv uprights A. It willbe noted that the plates or flat bars O are secured to the upper andlower beams of the cage by corner-braces or angle-plates c2 and c3, thelatter serving, with extensions c4 of said flat bars, to form the meansof connection for the hoisting and lowering devices hereinaftermentioned; also, that the lower ends of the plates or fiat bars C areextended under the lower beams B to strengthen the connection at thispoint.

The parts described combine to produce a very stron and durable cagewhich will slide freely in t e shaft upon and between the beams oruprights A and is of light construction consistently with the requiredstrength, such cage beingdesigned to support and carry the pivotedpiatfrom hereinafter described.

The elevator connections for the hoisting and lowering cable comprisethe chains d, eX- tending from the brackets c3 c4 and attached to aspreader-plate d', the latter carrying the eyebolt cl2, to which thecable d3 is attached. The eyebolt has the usual compression-spring d4interposed between the nut-held washer d5 and aforesaid spreader-plated. This is one of the usual forms of connection,

Mounted upon the lower beams B of the cage are bearing-blocks e e, inwhich is journaled a rock shaft f, adapted to pivotally support theplatform G of the cage. The platform is made up in any suitable manner,in the present instance of the horizontal beams g and connectingcross-beams g, and upon said platform are secured the trackrails 7L,upon which the cars run. The platform is supported from the rock-shaft fby means of triangular plates I, having outwardly-projecting flanges iat their upper ends by which they are secured to said plat- IOO IIO

form, such connection being reinforced by means of angle-bars t, asshown in Fig. 1. The triangular plates I are reinforced at their lowerends, where they are fixed to the shaft, by means of plates i2. Thisparticular manner of supporting the platform permits the same to beswung or tilted at either side of the cage, so as to facilitate thedischarge of the contents of the car atupper end of the mine-shaft, andin order to support the platform horizontally during the travel of thecage in the shaft said platform is provided with shoes4 y', secured inpairs at opposite sides thereof and disposed to travel at opposite sidesof the beams or uprights A. To permit of the tilting movement of theplatform, the beams or uprights A of the mineshaft are cut away at theirinner sides, as at a, whereby the shoes may pass the beams, the beams oruprights being cut away for the purpose only at such points where thecage stops to take on and let off cars.

To hold the cars stationary on the platform during the travel of thecage in the shaft and at the dumping-point, a pair of locking-dogs M arepivotally supported in the platform and so located that the same will beswung automatically to engage the wheels of the car when the elevatorleaves the bottom landing. These dogs each consist of a bar fixed at itslower end on a shaft m, bent forwardly at an angle intermediately, as atm, and bifurcated at its upper end to provide the oppositely-curvedmembers m2 m2, which latter engage the inclined portion of the peripheryof the wheels 0 of the car, passing in between the wheels at oppositesides of the car. The dogs are adapted to swing away from the carindisengaging the wheels and are operated in this direction by means oftrip-levers N, fixed on the opposite ends of the shafts m and extendingtoward the center of the platform parallel with the ends thereof, saidtrip-levers having outwardly-projecting engaging members n, Y by whichthey are operated automatically by contact with bottom landing. Theselocking-dogs are normally brought to an upright position for engagingthe car-wheels by means of a compression-spring s, attached thereto andextending therebetween, and in this latter position of the dogs the freeends of the trip-levers are downwardlyinclined, as shown in Figs. 1 and2 of the drawings.

I provide the cage with an automatic safety device for arresting itsfall in case there should be a break in the hoisting and lowering cableor the machinery operating the same. For this purpose safety-catches pare attached to the upper part of the elevator-frame and disposed atopposite sides of the beams or uprights A, so as to engage the latterand hold the cage suspended thereby. These catches are fixed on shaftsp', the latter having bearings in brackets g, attached to the beams Band at their ends in the corner-braces c2, (see Fig. 5,) such bearingsbeing at opposite sides of the catches, so as to firmly support thesame. The shafts p are provided with outwardlyprojecting fixed arms p2,by which they are connected to a transverse rod p3, to which latter theoperating rod p4 is attached. The operating-rod is connected by a chainp5 and interposed spring p to the spreader-plate d of the cageconnections for the hoisting and lowering apparatus. There is also ahelical spring p7, which encircles the operating-rod p4 and isinterposed between the transverse rod p3 and a bearing-plate b, attachedto the beams B B, said bearing-plate also serving as a guide for theoperating rod. It will be noted that the tendency of the spring p7 is todepress the rod p3, and consequently move the catches into engagementwith the uprights, and that the connection of the operating-rod with thehoisting and lowering device is such that when the elevator is suspendedfrom said latter device the catches will be out of engagement with theuprights. In this manner when the draft on the operating-rod isreleased-for instance, in case the hoisting and lowering cablebreaks-the spring p7 will depress the rod p3, andthe latter beingconnected to the transverse rods p will turn the latter to bring thecatches into engagement with the uprights A of the mineshaft, theengagement being such as to support the cage against falling. Theinterposed spring p permits the safety device to be operated manually bydrawing upon the pull-cords o.

The safety-catches p are in the shape of cams having the engagingprojections or members p8 and 0, the member p8 being bifurcated to provie points or spurs, while the member p9 is thicker and provided with astraight edge, so as not to penetrate the beam to any great extent. Themember p8 is in advance of the member p9, whereby the points of theformer will when the catches or cams are swung against the beamspenetrate the beam and bring the other or stronger member against thesame to quickly and effectually stop the descent of the cage.

From the foregoing it will be readily seen that I provide a mine cagewhich is extremely simple in construction and operation, is stronglybuilt7 will run freely and smoothly in the shaft, will facilitate thehandling of the cars, and will prevent serious accident in case of abreak or disarrangement of the hoisting and lowering apparatus.

Having thus described my invention,what I claim as new, and desire tosecure by Letters Patent, is-

l. In a mine-cage, the combination with the uprights or guide-rails ofthe elevatorshaft having passage-ways therein, of the cage, a plat ormpivoted therein, vertically- IOO IOS

disposed triangular plates supporting the platform, a rook-shaft towhich the triangular plates are fixed and forming a pivot forsaiddplates by which the platform may be tilte shoes at the sides of theplatform adapted to slide on the uprights and pass through thepassage-ways thereof when the platform is tilted, dogs pivoted in theplatform and adapted to engage the wheels of a oar run thereon, a springconnecting the dogs to hold them upright or normally in engagement withsuoh wheels, and operating-levers connected to the dogs for releasingthem, substantially as shown and described.

2. In a mine-cage, the combination with the cage, of a platform pivotedtherein, dogs pivoted in the platform and adapted to engage the Wheelsof a oar run thereon, said dogs comprising a bar bifuroated at its upperor free end to provide oppositely-ourved enzo the center of the platformat opposite lends of 2 5 the latter, arms projecting outwardly at thefree ends of the levers, and a spring adapted to hold the dogs normallyupright with the levers at a downward inclination, substantially asshown and for the purpose set forth. 3o

In ltestimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE R. LAYMAN.

Witnesses A. D. CADWALLADER, J. E. JEWETT.

